JPS5814835A - Controlling device for correction of blackening by testing of test piece in automatic developing machine - Google Patents

Abstract

PURPOSE:To correct blackening mechanically, accurately and quickly by calculating the set density when a test piece is processed with a standard developing soln. and the set density when it is processed with the developing soln. to be corrected, and replenishing a blackening replenisher or passing an exposed film. CONSTITUTION:The standard density N when a test piece is processed with a standard developing soln. is measured with a densitometer 5, and is set in a standard density setter 6. The blackening coeffts. K1, K2 of the equationsI, II are set in setters 7, 8. (T is the time when a replenishing means is held open, and A is the area of the exposed waste film). The density N' measured when said piece is treated with the developing soln. to be corrected is similarly set in a measured density setter 12. The control range P that requires no correction is set in a setter 9. Further, the equationsI, II are stored in multipliers 10, 11. The set densities N, N' are inputted to an excess or shortage discriminating circuit 13 and a subtractor 14, according to the results of which a solenoid valve 19 is opened by the time T through a comparator 17 and gates 15, 16, and a blackening replenisher is replenished, or the exposed film is passed through the machine according to the area A displayed by a decoder 20 on a display device 21, whereby the developing soln. is controlled to prescribed activity.

Description

[Detailed Description of the Invention] In order to maintain the activity of the developer at a predetermined value in automatic film development, a constant flow pump or a constant flow electromagnetic A method of operating a valve for a certain period of time to replenish anti-blackening replenisher corresponding to the development processing area of the film and a predetermined blackening rate, and replenishing anti-blackening replenisher corresponding to the actual blackening area of the processed film. Assuming the amount of replenishment that corresponds to the decrease in developer activity per unit length of film, replenish the anti-blackening replenisher for a period of time corresponding to the measured length of the film during processing. Methods of emitting light are known.

The developer also becomes fatigued due to oxidation, and the degree of fatigue differs depending on whether the automatic developing machine is in operation or at rest. It is necessary to replenish a proportionate amount of anti-oxidant replenisher.

However, if the above-mentioned correction management is continued, errors in control accuracy will accumulate, so it is necessary to run the test piece twice a day and further correct the developer based on the results.

Among the correction management using test pieces, blackening correction has conventionally been carried out by developing a test piece that has been exposed to a predetermined density with a standard developing solution and then measuring it visually or with a ledger. Compare the known standard concentration at the laboratory with the temperature measured visually or using a shaking U meter at a predetermined location where the same type of test piece is developed with the developer to be corrected. The developer was managed by replenishing the developer replenisher using the experience and skill of a skilled person, or if it was over-replenishing, by lowering the activity through exposure film. .

However, this method is not suitable for the concentration difference between the two test pieces.
Since the exact amount of liquid to be filled is determined by recirculation, it is usually necessary to manually replenish the liquid to a slightly smaller amount.At that point, pass the specimen through the test piece again and refill the missing amount, and if it is overfilled, replenish it while testing. The unused film is passed through it two or three times to restore it to its standard state, but the process is very troublesome and time consuming.

The present invention relates to a device that can mechanically, accurately and quickly perform the blackening correction using the above-mentioned test piece, and the percentage is determined by the test as illustrated in FIG. When the piece (1) is processed with a standard developer, the measurement point (4) of the continuous tone zone (2) or the mesh zone (3), for example, the 50% halftone dot of the mesh zone (3), is The standard concentration measured with the densitometer (5) was set as N, and the same measurement point (4) was measured in the same way when the same type of test piece (1) was treated with the developer to be corrected. The measured concentration is N
According to the instructions of the computer, the following (1)
The anti-blackening replenisher is automatically replenished according to the formula, or the exposed and unnecessary film is passed according to the formula (2) below.

T=to, x (N-N)・・・・・・・・・・・・
・・・・・・・・・・・・・・・・・・・・・(1)A
=-Nisu x (N-N)・・・・・・・・・・・・・・・
・・・・・・・・・・・・・・・(2) T is the time the solenoid valve for replenishing the replenisher is open.

A is the area of exposed unused film.

K is a blackening coefficient determined experimentally in advance based on the test piece, developing solution, and replenisher used, the magnetism measurement position of the test piece, the flow rate of the replenishing solenoid valve, the type of waste film, etc.

Note that the density measurement point corresponds to the above measurement point (4) in the continuous tone zone (2).・I don't mind even one place.

Next, the present invention will be specifically explained based on FIG.

In advance, set the standard σ:<b-N, the first blackening coefficient to 1, and the second blackening coefficient to 2, using the standard density setter (6) and the first blackening coefficient setter ('l), respectively. Second blackening coefficient setter (8
)K is set.

Also, the difference between the standard density N and the measured production N is small and within the allowable range, and the control width P' does not require correction of the developer! !
:, is set in advance in the management width setting device (9).

Further, the above equations (1) and (2) are stored in the first multiplication circuit (10) and the second multiplication circuit (11), respectively.

Then, when the above-mentioned measured density N measured by changing the needle (5) is set to the measured density setting device (1) and this device is started, the set image density N and N are both determined by the excess/deficiency judgment circuit. 0
3) and is input to the subtraction circuit (14).

Then, in the excess/deficiency determination time &+5 (ia), it is determined whether the image density N1N is large or small, that is, whether the developer is under-replenished or over-replenished, and is output as a positive or negative signal in the first game) (15) and the second gate (output to IQI and reduce signal: circuit 04), the concentration difference N - N'
is calculated, and the result is sent to the above-mentioned double multiplier circuit αO) (1:
l) and output to comparison circuit 07).

The comparison circuit 07) compares the value of N-H with the management width P input from the management width setting device (9), and determines that Pmax>N-N>P,
Il, that is, if the concentration difference N-N is within the control width P,
Light the lamp (+8) to notify, N-N')Pm,X
o, that is, if the developer is insufficiently replenished to the control width 2 or more, the first gate (b)) is opened; , open the second gate (1(+)).

When the first gate 05) opens, the passing signal causes the first
The multiplication circuit α0) is started, and the above (1 ) Formula T: K.

The calculation of X(N-N) is performed and the solenoid valve 09) is operated for a time T.
The developer is opened and refilled with the required amount of anti-blackening solution to restore the developer to the predetermined activity level.

Furthermore, when the second gate 06) opens, the second multiplication circuit is activated by the passing signal, and the operational difference N - N' input from the subtraction circuit 04) and the second blackening coefficient setter (8 ) to the second blackening coefficient input from 2, the above formula (2) A--K.

x(N-N) is calculated, and the result is sent to the decoder (2
Since the area value A is displayed on the display (21) via 0), if the exposed film is passed through the developer in accordance with the area value A, the developer can be made to have a predetermined activity level.

As described above, according to the apparatus of the present invention, all of the anti-blackening correction can be performed mechanically, so even an unskilled person can quickly and accurately correct the anti-blackening of the developer with one simple operation. It is very convenient to be able to perform color correction, and it is also possible to improve the operating rate of the automatic developing machine.

In addition, in the above, the concentration measurement of the test piece (1) is carried out by installing a test piece detection device such as a microswitch at the dryer outlet of the automatic developing machine, a film conveyance temporary stop device operated by the detection device, and A concentration meter (5) may be installed to automatically measure and input it into the device of the present invention, or,
The density of the developed test piece (1) may be manually measured at a proper location and input into the present apparatus.

In the above, the medium concentration point of the test piece (1) was used as the concentration measurement point (4), but this is because the concentration can be measured relatively easily and accurately at the same point. The 75% point can also be used as the concentration measurement point.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an example of a test piece, and FIG. 2 is a block diagram of the apparatus of the present invention. (1) Test piece (2) Continuous tone zone (3)
Mesh zone (4) Measuring point (5) 'GE meter change needle (6) Standard density setting device (7) First blackening coefficient setting device (8) Second blackening coefficient setting device (9) Control width setting device
F0) First multiplier circuit C11) Second multiplier circuit (12
1 Measurement concentration setter 0 Phrase excess/deficiency discrimination circuit 04) Subtraction circuit (15) 1st gate (I6) 2nd gate 07
) Comparison circuit (T) Lamp (19)'im magnetic valve (Foundation) Decoder (21 + Indicator procedural amendment (voluntary) June 3, 1980 Commissioner of the Patent Office Haruki Shimada Indication of the case 1988 Patent application No. 113218 No. 3, Relationship with the case of the person making the amendment Patent applicant 6, Number of inventions increased by amendment - 111\go118
Contents of the amendment (Contents of the amendment) (1) The name of the invention in lines 6-4 of page 1 of the specification is corrected to "Darkening correction device using a test piece in an automatic processor." (2) ``Scope of claims'' on page 1, line 6 to page 3, line 15, shall be corrected as follows. ``(1) Test piece treated with the standard developer) at the predetermined measurement point (4) of the standard quality N' A measurement concentration setting device for setting the measurement concentration N at the same location as the measurement point for the same type of test piece as above, and an anti-blackening replenisher for restoring the activity of the insufficiently replenished developer to a predetermined value. The operation of the constant flow replenishment means is experimentally determined as 31 匪t-T, T=
The first blackening coefficient setting device sets the first blackening coefficient to 1 to satisfy the formula 1x(N-N), and the exposure method unnecessary film reduces the activity of the over-replenished developer to a predetermined value. As the required area ThA, set a second blackening coefficient Kl that satisfies the formula of 2X (N-N) for A=-, which was determined experimentally.The second blackening coefficient is set for the skin, and the above standard density N is measured. The control width setter side which sets the control width P which experimentally determined the allowable range of the concentration/difference N-N of the concentration/N, and the standard concentration/setting 4 above and the measured concentration/setter - set to steep. Excess/deficiency determination circuit that inputs the concentrations N and N', determines their magnitude, and outputs a positive or negative signal; and the concentration set in the standard concentration, setting device 12, and measured concentration/setting device 12. - A subtraction circuit W that inputs N and N' and calculates the concentration/difference N-N'i, the calculation result for the subtraction circuit, and the management width setting device (9).
Input and compare the management width P' set in PmaXb
> N −N > Pmin, 't', i) If appropriate, display this 'lk. If N -N > Pmax, output a positive signal, and if N -N (pmin, , a comparison circuit that outputs a negative signal, a positive signal from the above-mentioned excess/deficiency discrimination circuit, a first gate gate that opens only when all the positive signals similar to those of the comparison circuit are input, and an excess/deficiency discrimination circuit. The second gate rule opens only when the negative signal of the target and the negative signal of the comparator circuit are input, 1x(N-N) is memorized in the above experimental formula T=, and the first gate [lSo output signal] Start, subtract and multiply circuit ti
α, 2 X (N-N) is stored in the above experimental formula A=-, and activated by the output signal of the second game) (161), the subtraction 2 multiplication circuit is operated, and the calculation of the second multiplication circuit is performed. Result 4 - An anti-blackening correction device using a test piece in an automatic processor, characterized in that the display section showing the bag is constructed of metal. (2) If T is the opening time of the replenisher replenishment valve. and'fr: the device according to claim (1), characterized in that: (3) the device according to claim (1), characterized in that T is the drive time of the replenisher replenishment pump; "Temporary storage as described in Section 5." (3) Page 5, line 16, "Add "Exposed" before Unused film-1. (4) Page 6, lines 16 to 14, “T is...
・Correct "T is the time during which the constant flow replenishment means is operated." (5) On page 6, line 15, "Exposed" should be corrected to "Exposed." 16) Page 8, line 16, ``Add ``constant flow rate'' before solenoid valve-1.'' (7) Next to “Second multiplier circuit” on page 8, line 20, r [
Add 11J. (8) Add the following between lines 6 and 7 on page 10. “As the constant flow replenishment means, the constant flow solenoid valve (191
It goes without saying that a constant flow pump or the like may be used instead of the pump.

Claims (1)

[Claims] A standard concentration setting device for setting the standard concentration N at a predetermined measurement point (4) of a test piece treated with a standard developer, and the same test as the above, treated with a developer to be corrected. The measurement temperature setting device sets the measurement resolution N at the same point as the above measurement point on the sheet, and the opening time of the sleeve liquid replenishment valve that increases the activity of the under-corrected developer to a predetermined value is defined as T. , experimentally determined, T
a first blackening coefficient setting device that sets a first blackening coefficient that satisfies the formula of x(N-N) to a second blackening coefficient setting device that sets 2 to a second blackening coefficient that satisfies the experimentally determined formula of A-Lx (N N), where A is the required area of the film that does not require an exposure method; A control width setting device for setting a control width P, which is an experimentally determined permissible range of the concentration difference N-H between the concentration N and the measured concentration N;
, N and determines its magnitude and outputs a positive or negative signal.Inputting the concentrations N and N set in the standard # degree setting device and measurement concentration setting device, A subtraction circuit that calculates the degree difference N - N inputs and compares the calculation result of the above subtraction circuit and the control width P set in the control width setting device, P□,)N-N)P□,
If so, display this as appropriate, and output a positive signal if N-N)Pm,x, and a negative signal if N-N'(Pmm), and a comparison circuit that outputs a negative signal if N-N'(Pmm, A first gate that opens only when a positive signal from the deficiency discrimination circuit and a positive signal from the comparison circuit are input, and a second gate that opens only when a negative signal from the excess/deficiency discrimination circuit and a negative signal from the comparison circuit are input. gate and the above empirical formula T=K, x (N −N
) is memorized and activated by the output signal of the first gate,
The first blackening coefficient set in the second blackening coefficient setting device and the first blackening coefficient set in the first blackening coefficient setter is calculated by the first multiplier circuit that calculates and outputs the valve opening time T from the second result of the subtraction circuit, and the output of the first multiplier circuit. , a solenoid valve that opens for an opening time T and allows the anti-blackening replenisher to pass through, and the above-mentioned practical formula A=-
x (N-N) is stored, and activated by the output signal of the second gate, the exposure is determined based on the calculation result of the subtraction circuit and the second blackening coefficient set in the second blackening coefficient setting device. A test on an automatic developing machine characterized by comprising: a second multiplier circuit that calculates and outputs the area A of unfinished film; and a display section that displays the calculation result of the second multiplier circuit via a decoder. Blackening correction management device using a piece test.